Green—Internal DSU/CSU in the HWIC is communicating with another DSU/CSU. This LED is on during normal operation.Yellow—Interface card is in loopback mode

Off

Normal operation.

AL LED

Yellow

Remote station has an alarm condition.

Off

Normal operation.

Supported Platforms

The HWIC-1T1/E1 is supported on the Cisco 1861 integrated services router (ISR).

Note Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image support. Access Cisco Feature Navigator at http://www.cisco.com/go/fn. You must have an account on Cisco.com. If you do not have an account or have forgotten your username or password, click Cancel at the login dialog box and follow the instructions that appear.

Prerequisites for Connecting a T1/E1 HWIC to a Network

Before connecting a T1/E1 HWIC to a network, ensure that the HWIC is installed in the router, that the equipment is properly grounded, and that you have the proper cables for connecting the HWIC to the network. This section describes the preparation necessary before connecting a T1/E1 HWIC to the network.

Warning Hazardous network voltages are present in WAN ports regardless of whether power to the unit is OFF or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables, detach the end away from the unit first. Statement 1026

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

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